Home » Pneumatic Actuated Valves » Pneumatic PVDF Flange Diaphragm Valve
Pneumatic PVDF Flange Diaphragm Valve
Pneumatic PVDF Flange Diaphragm Valve
Engineered for the most demanding industrial environments, our Pneumatic PVDF Flanged Diaphragm Valve provides superior control over aggressive and difficult media. The valve’s construction features a highly durable PVDF body and a corrosion-resistant diaphragm, ensuring maximum chemical compatibility. Its innovative glandless design and elastic diaphragm as the core throttling element create a hermetic seal, completely eliminating the risk of external leakage. Furthermore, the smooth, streamlined flow path minimizes obstruction, resulting in a high flow capacity with minimal pressure drop.
Description
The pneumatic diaphragm valve has the advantages of small negative force, large f1ow, n leakage, and convenience ad reliability. fireproof and explosion-prior, and is widely aplied的strong acid, strong alkali, and strong Corrosion in industrial automation system Flow regulations to high viscosity, glume. fiber and toxic and non-poluting media.
Features & Benefits
- Exceptional Chemical Resistance: The PVDF body and specialized diaphragm are inert to strong acids, strong alkalis, and a wide range of highly corrosive media, guaranteeing a long service life.
- Zero External Leakage: The packing-free (glandless) structure physically separates the process media from the environment, making it the perfect choice for toxic or high-purity applications where containment is critical.
- Intrinsically Safe Operation: Being pneumatically actuated, the valve is inherently fire and explosion-proof, making it ideal for use in hazardous areas without needing complex electrical safety measures.
- High Flow & Non-Clogging: The unobstructed flow path allows for high throughput and is exceptionally effective at handling media with high viscosity, suspended solids, or fibers without clogging.
Main Materials
| No. | Part Name | Material |
|---|---|---|
| 1 | Body | PVDF |
| 2 | Bonnet | PVDF |
| 3 | Diaphragm | EPDM+F46 |
| 4 | Disc | PVDF |
| 5 | Cylinder | Aluminum alloy |
| 6 | Piston | Aluminum alloy |
| 7 | Stem | Stainless steel 304/45# |
| 8 | Connection Type | Flange, Socket-weld, Thread |
Dimensions

| DN | L | D | HG | D1 (JIS) | D1 (DIN) | D1 (ANSI) | n (Holes) | ød | A | H | Valve Weight (KG) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 15 | 125 | 95 | 65 | 70 | 65 | 60 | 4 | 14 | 110 | 215 | 2.5 |
| 20 | 135 | 105 | 75 | 75 | 75 | 70 | 4 | 14 | 110 | 220 | 2.8 |
| 25 | 145 | 115 | 85 | 90 | 85 | 80 | 4 | 14 | 110 | 225 | 3 |
| 32 | 150 | 135 | 100 | 4 | 18 | 140 | 240 | 3.5 | |||
| 40 | 180 | 145 | 110 | 105 | 110 | 100 | 4 | 18 | 170 | 285 | 6.5 |
| 50 | 210 | 160 | 125 | 120 | 125 | 120 | 4 | 18 | 170 | 307 | 9.5 |
| 65 | 250 | 180 | 145 | 140 | 145 | 140 | 4 | 18 | 200 | 327 | 16 |
| 80 | 300 | 195 | 160 | 150 | 160 | 152 | 8 | 18 | 230 | 390 | 19 |
| 100 | 350 | 215 | 180 | 175 | 180 | 190 | 8 | 18 | 260 | 470 | 27 |
| 125 | 400 | 245 | 210 | 210 | 210 | 216 | 8 | 18 | 310 | 637 | 33 |
| 150 | 480 | 280 | 240 | 240 | 240 | 240 | 8 | 23 | 370 | ||
| 200 | 570 | 335 | 295 | 290 | 295 | 298 | 8 | 23 | 490 |
Applications
- Aggressive Chemicals: Strong acids, alkalis, and corrosive mixtures.
- Difficult Media: High-viscosity fluids, slurries with particulates, and fibrous substances.
- Sensitive and Hazardous Fluids: Toxic, sterile, and contamination-sensitive media where purity and safety are paramount.





















